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2021 Map of Rat Islands C-6 NW

Name: 2021 Topographic Map of Rat Islands C-6 NW
Creator: U.S. Geological Survey
Published: 2021
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2021

About this map

Segula Island rises from the volcanic landscape of the western Aleutian chain, its northern coastline defining the upper edge of this survey. The terrain is marked by steep elevation gains leading away from the Bering Sea, culminating at Chugul Point on the island's northwestern tip. This maritime environment is dominated by the waters of Segula Pass, a vital corridor between the isolated peaks of the Rat Islands group.

The map details a landscape almost entirely defined by its nautical boundaries and topographic relief. Public land survey divisions like t94s r232w and t96s r232w grid the open water and rocky shorelines, providing a formal structure to this uninhabited stretch of the Alaska maritime frontier. The absence of human infrastructure highlights the extreme isolation of this volcanic island terrain within the North Pacific.